Re: Dielectric

rambotrout wrote:
> 
> If two electrodes are sandwitching two dielectric materials with very
> different dielectric constants (but the same thickness), say, water
> and glass. Would the new dielectric constant lies in between the
> original two?
> 
> What would be the electric field in between the dielectric materials?
> I suppose not half of the total electric field imposed by the
> electrodes. Would the larger dielectric constant material take up more
> of it?
> 
> If the water contains ions, would that change its dielectric constant
> from that of its pure form (about 80)?

Water with ions is electrically conductive.  A better example would be
two solid slabs, perhaps contrasting polyethylene foam (about 1.3,
coax cable) and poly(vinylidene fluoride) at 12.2 or potassium
tantalate niobate at 6000.

What if you insulated your DC electrodes with a couple of microns
thickness of Parylene-C film then dipped them in electrolyte solution
or placed a copper slab in-between?

> Is there any relation between dielectric constant

electric field attenuation
 
> and dielectric
> strength?

breakthrough voltage/thickness

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